How to Find the Driver and Software for the HP Scanjet 4850 for a MacBook
- 1). Open an Internet browser and navigate to the HP website (see link in References).
- 2). Click the link "Support and Drivers" in the top center of the web page.
- 3). Select the radio button next to "Download drivers and software (and firmware)" in "Step 1," then type "Scanjet 4850" in the "Step 2" section once the option becomes available. Press "Enter."
- 4). Choose your preferred language in the language drop-down option, then click on "Mac OS X" under "Select operating system."
- 5). Click the "Download" link to download and install the driver and software.
Source...